Method and device for machining and/or producing a component and such a component

Patent metadata

Field	Value
Publication number	US-11247257-B2
Application number	US-201816050723-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Feb 1, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A method for machining includes providing a component or a semifinished part which has a main body with a first surface and with a first surface coating provided on the first surface. The method also includes notching the component or the semifinished part on the first surface coated with the first surface coating. The method also includes severing, perforating or trimming the component or the semifinished part along the notch. At least a part of the first surface coating which is notched in the process is maintained along notch surfaces.

First claim

What is claimed is:

1. A method for machining and/or producing a component, comprising:
providing a component or a semifinished part which has a main body with a first surface and with a first surface coating provided on the first surface,
notching the component or the semifinished part on the first surface coated with the first surface coating, wherein after the notching has been completed the first surface coating remains present at least at a vertex of the notched first surface, and
perforating the component or the semifinished part along the notch.

2. The method as claimed in claim 1 , wherein after the notching has been completed the first surface coating remains as a continuous uninterrupted layer from a first end that is upstream of an area where the notching took place, through the area where the notching took place, to a second end that is downstream of the area where nothing took place.

3. The method as claimed in claim 1 , wherein the perforating the component or of the semifinished part is performed using a mechanical cutting process.

4. The method as claimed in claim 3 , wherein the component or the semifinished part has a second surface coating on a second surface situated opposite the first surface, and the component or the semifinished part is notched both on the first surface coated with the first surface coating and on the second surface coated with the second surface coating.

5. The method as claimed in claim 4 , wherein the notching on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating is performed to a depth of less than half of the thickness of the main body DG.

6. The method as claimed in claim 5 , wherein the notching is performed symmetrically in a notching direction.

7. The method as claimed in claim 6 , wherein the notching is performed by means of stamping, roll-stamping, rolling or knurling.

8. The method as claimed in claim 7 , wherein the notching is performed symmetrically on the first surface coated with the first surface coating and on the second surface coated with the second surface coating.

9. The method as claimed in claim 8 , wherein the first and/or second surface coating is selected from at least one zinc layer, at least one zinc-aluminum layer, at least one adhesive layer and/or at least one polymer layer.

10. The method as claimed in claim 9 , wherein a thickness of the main body (DG) amounts to at most 3 mm.

11. The method as claimed in claim 10 , wherein a layer thickness of the first surface coating (DOb 1 ) and/or a layer thickness of the second surface coating (DOb 2 ) amounts to at most 20 μm.

12. The method as claimed in claim 11 , wherein a layer thickness of the second surface coating along the notch surfaces amounts to between at least 20% and at least 30%, of the layer thickness of the second surface coating on a second surface of the component (DOb 2 ) or of the semifinished part.

13. The method as claimed in claim 12 , wherein the layer thickness of the first surface coating along the notch surfaces and/or the layer thickness of the second surface coating along the notch surfaces defines a gradient.

14. A device for carrying out the method as claimed in claim 13 .

15. The device as claimed in claim 14 , wherein the device is configured to perform at least one of the notching, severing, perforation, or trimming of the component or of the semifinished part in one working step.

16. The method as claimed in claim 4 , wherein the notching on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating is performed to a depth of 10 to 40% of the thickness of the main body DG.

17. The method as claimed in claim 9 , wherein a thickness of the main body (DG) amounts to between 0.5 and 2.5 mm.

18. The method as claimed in claim 10 , wherein a layer thickness of the first surface coating (DOb 1 ) and/or a layer thickness of the second surface coating (DOb 2 ) amounts to at most 15 μm.

19. A component produced in accordance with a method as claimed in claim 1 .

20. The component as claimed in claim 19 , wherein at least a part of the first surface coating or of the second surface coating is maintained along notch surfaces.

21. The method as claimed in claim 1 , wherein a layer thickness of the first surface coating along the notch surfaces amounts to between at least 20% and at least 30%, of the layer thickness of the first surface coating on a first surface of the component (DOb 1 ) or of the semifinished part.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Glueck Bernhard
• Kirschner Robert

Classifications

• B21D28/26 Primary

  in sheets or flat parts · CPC title

• B21D35/001

  Shaping combined with punching, e.g. stamping and perforating · CPC title